ARIES Insitutional Digital Repositary (ARIES-IDR): Recent submissions

  • Evolution of the helical prominence of December 15, 1992 
    Uddin, W.; Gaur, V. P.; Pande, M. C. (1995)
    Following Vrsnak (1990), the observations of an eruptive prominence are analysed. Time evolution of height and velocity of the ascending prominence are measured. The prominence manifested helical structure and many knots. ...
  • UBV CCD standards in two galaactic directions – II 
    Mohan, V.; Sanwal, B. B.; Paliwal, D. C.; Pandey, A. K.; Bhatt, B. C.; Robin, A. C. (1996)
    Using CCD observations, photometric magnitudes have been obtained in two galactic directions at intermediate latitude. A total of 7 sub-fields in one direction (l = 3°, b = 47°) have been observed leading to photometric ...
  • Spectrometric observations of some Be stars 
    Singh, M.; Sanwal, B. B. (1996)
    Using EG and G spectrograph coupled with reticon array detector and Optical Multichannel Analyser (OMA) at the Cassegrain focus of the 104 cm telescope of the U.P. State Observatory, Naini Tal, several well known bright ...
  • Spectrophotometry of RZ Cas 
    Chaubey, U. S. (1996)
    Spectrum scans of the eclipsing binary star RZ Cas at different phases in the wavelength range λλ 3300 - 7600 Å taken through Hilger and Watts monochromator equipped with 104-cm telescope of Uttar Pradesh State Observatory, ...
  • A photometric study of the open cluster King 7 
    Durgapal, A. K.; Mohan, V.; Pandey, A. K.; Mahra, H. S. (1996)
    The UBVRI CCD photometric observations of stars in the field o King 7 have been used to study the fundamental parameters such as interstellar extinction, age distance and mass function of the cluster. To obtain these ...
  • On the solar oscillator strength of SiH⁺ 
    Trivedi, C.; Sinha, K. (1997)
    Rather contrasting values of the oscillator strengths for the (0,0) band of SiH⁺ molecules for the A ¹II – X¹ ∑⁺ transition have been reported in the literature. We investigate these with the help of a new set of solar ...
  • Solar log gf values for the spectral lines in the range λλ 6209-6273 Å 
    Stalin, C. S.; Sinha, K.; Sanwal, B. B. (1997)
    Utilizing Liege solar atlas and solar photospheric models, we derived log gf values for the spectral lines in the wavelength range λλ 6209-6273 Å. These values, intended for use in a future study of a high resolution reticon ...
  • Stellar contents of the open clusters Be 64 and Be 69 
    Pandey, A. K.; Durgapal, A. K.; Bhatt, B. C.; Mohan, V.; Mahra, H. S. (1997)
    We present U BV RI CCD photometry for previously unstudied open clusters (Be 64 and Be 69). Photometry has also been carried out for nearby fields to correct for the effects of field stars contamination. From the ...
  • The Nainital-Cape Survey: III. A search for pulsational variability in chemically peculiar stars 
    Joshi, S.; Mary, D. L.; Chakradhari, N. K.; Tiwari, S. K.; Billaud, C. (2009)
    The Nainital-Cape survey is a dedicated research programme to search for and study the pulsational variability in chemically peculiar stars in the Northern Hemisphere. The aim of the survey is to search for such chemically ...
  • Photometric flash-light observations of SL9 impact on Jupiter 
    Srivastava, R. K.; Padalia, T. D.; Mahra, H. S. (1997)
    The effects of SL9 impact on Jupiter has been assessed by observing flash-light effect on the nearest satellites of Jupiter, the Io, on 21 July, 1994. The observations in V filter of flash-light effect on Io suggest a ...
  • CCD photometry of galactic open star clusters – V. King 7 
    Durgapal, A. K.; Pandey, A. K.; Mohan, V. (1997)
    CCD observations of the open clusters King 7 and two nearby fields have been made in the UBVRI passbands down to V ~ 20.0 mag. From the colour-colour diagram the reddening is estimated to be 1.25 mag. Comparison of the ...
  • Eruption of twisted filament, associated flare and transient phenomena 
    Uddin, W.; Verma, V. K. (1998)
    In this paper we present CCD observations between 14th to 20th Feb. 1994 and analysis of the giant twisted filament evolved in the active region NOAA 7671. The dynamic eruption of the filament accompanied by major flare ...
  • The age of the Galactic Globular Clusters 
    Sagar, R. (1997)
    The Galactic globular clusters are believed to be among the most ancient objects for which reliable ages can be determined. As the Universe can not be younger than the oldest object it contains, the oldest Galactic globular ...
  • Proposed microthermal measurements at Devasthal 
    Pant, P.; Sagar, R. (1998)
    For evaluating the optical quality of the Devasthal site, it is proposed to set-up a potential viable instrument for detecting the microthermal fluctuations introducted by the atmospheric turbulence. The details of the ...
  • CCD photometry of the galactic open cluster NGC 2309 
    Nilakshi; Pandey, A. K.; Mohan, V. (1998)
    The comparison between the observed HR diagram of the clusters and the isochrones computed by means of evolutionary models provides a test for stellar structure and evolution. To get fundamental information for above ...
  • GRB 041015 R band observations 
    Pandey, S. B.; Misra, K. (2004)
    We observed the GRB 041015 field (integral trigger 2019) with 1.04-m reflector at ARIES Nainital, starting at Oct 15.6424 UT. Co-added R_c frame (2 x 900 sec) did not reveal any new source within eror-box upto - 20 mag, ...
  • GRB 041006 optical afterglow observations 
    Pandey, S. B.; Misra, K. (2004)
    We observed several R_c band frames of the GRB 041006 optical afterglow, determined the magnitudes in comparison with the stars A and B as reported in GCN 2792 using 1.04-m telescope of ARIES Nainital India. The OT decayed ...
  • GRB 040403 optical observations 
    Mishra, K. (2004)
    We observed the error circle of integral GRB 040403 (Gotz et al., GCN 2560) in R band, with 1.0-m telescope at Nainital (India) on April 03, 2004 starting at 16:44 UT. We found no new source brighter than R - 19.5 when ...
  • Spectrometric study of comet C/1996 B2 Hyakutake 
    Singh, M.; Sanwal, B. B. (1998)
    The spectrometric observations of Comet C/1996 B2 Hyakutake were taken on six nights at its closest approach (March 23-April 09, 1996), with 104 cm telescope of the Naini Tal Observatory, using EG&G Spectrograph coupled ...
  • Neglected binaries of special interest 
    Srivastava, R. K. (1998)
    Some binaries of special interest, observed at Uttar Pradesh State Observatory, Naini Tal, have been presented in this communication. Some of these binaries, although sufficiently bright, have not yet been investigated ...

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